5
Velocity, PeakVue, and temperature
Topics covered in this chapter:
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•
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5.1
Overall Velocity
The Overall Velocity measurement provides a summation of the low-frequency vibration
energy, which indicates fault conditions such as imbalance, misalignment, looseness, and
late-stage bearing problems.
The CSI 9420 uses (lower-frequency) Overall Velocity in conjunction with (higher-
frequency) PeakVue to provide a holistic solution across all frequencies while optimizing
the usage of the limited power and bandwidth available in a wireless device. The majority
of developing fault conditions manifest in one or both of these key parameters.
The difference between the standard vibration waveform and the associated PeakVue
waveform is shown in
. Overall Vibration indicates energy from
shaft rotation, expressed in units of RMS velocity per the ISO 10816 standard. PeakVue, on
the other hand, filters out the rotational energy to focus on impacting. Impacting is
expressed in units of Peak acceleration. This indicates key mechanical problems such as
rolling element bearing faults, gear defects, and under-lubrication.
Velocity, PeakVue, and temperature
MHM-97408, Rev 15
91
Summary of Contents for CSI 9420
Page 4: ......
Page 10: ...Revision numbers in AMS Device Manager Figure 1 2 Introduction 4 MHM 97408 Rev 15 ...
Page 60: ...PeakVue spectrum Figure 2 35 Configuration 54 MHM 97408 Rev 15 ...
Page 92: ...Setup 86 MHM 97408 Rev 15 ...
Page 134: ...Product certifications 128 MHM 97408 Rev 15 ...
